We have been using the CR Spotless DI water system for over a year and the results have been great, but the down side has always been that the resin uses up too quickly and this gets real expensive. So we now manufacture a new system that uses the same DI resin but produces around 10 times the amount of DI water. So if you want to convert your CR Spotless system to make it more efficient visit our website to see how it's done.If you prefer to order the best Di water system on the market then visit: http://rvmods.com